That was over 24 years ago in 1998.
Today he is 71, and has starred in 86 movies in total, 43 since The Man in the Iron Mask was released.
In The Man in the Iron Mask, I think Gabriel Byrne looks:
The Man in the Iron Mask scores 6.3 out of 10 on The Movie Database.
Gabriel Byrne's first acting role was as 'Uther Pendragon' in Excalibur, released in 1981 when he was 30.